非水介质中某些取代铬衍生物在铂、金和玻碳电极上的电化学研究

A. E. Maghraby
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引用次数: 1

摘要

采用循环伏安法研究了取代铬衍生物在1,2-二氯乙烷(DCE)、二氯甲烷(DCM)和乙腈(AN)等非水溶剂中,以0.1mol dm -3四丁基高氯酸铵(TBAP)为支撑电解质,在铂、金和玻碳电极上的氧化还原特性。通过控制电位电解(CPE),可以对氧化还原产物进行分离和鉴定。发现氧化产物为相应的双化合物。另一方面,还原发生在一个单双电子过程中,产生了离子,离子吸收质子使(-C=O)键饱和。取代基对电活性位点氧化还原方式的影响也进行了研究。
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Electrochemical Study of Some Substituted Chromene Derivatives in Nonaqueous Media at Pt, Au and Glassy Carbon Electrodes
The redox characteristics of some substituted chromene derivatives has been investigated in different nonaque- ous solvents such as, 1,2- dichloroethane (DCE), dichloromethane (DCM) and acetonitrile (AN) using 0.1mol dm -3 tetrabutylammonium perchlorate (TBAP) as a supporting electrolyte at platinum, gold and glassy carbon electrodes, using cyclic voltammetry. Through controlled potential electrolysis (CPE), the product of oxidation and reduction can be sepa- rated and identified. The product of oxidation was found to be the corresponding bis-compound. On the other hand, the reduction occurs in a single two electron process to give the dianion, which abstracts protons to saturate the (-C=O) bond. The effect of substituents on the redox mode of an electroactive site has also been studied.
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